Apparatus for wrapping cartridges, etc.



June 7, 1932. A. E. ANDELIN APPARATUSFOR WRAPPING CARTRIDGES, ETC

Filed Dec. 51, '1928 5 sheets-sheet 1 June 7, 1932. A. E. ANDELIN v1,862,170

Y APPARATUS FOR WRAPPNG CARTRIDGES, ETC

Filed Dec. 5l, 1928 3 Sheet.ss-S11ee'cV 2 @JIM dmc @WML we j June7,'1932. A. E. ANDELI A 1,862,170

APPARATUS FOR WRAPPING CARTRIDGES, ETC

Filed Dec. 31, 1928 3 Sheets-Sheet 3 ad; wm

Patented June 7, 1932 UNITED "STATES ANTON ERIK ANDELIN, or BROMARF,BJoaKNAs, FINLAND,y AssIGNoR To FINsxA roaoIr-DYNANLIT nx'rrnnonnenn orHANeol FINLAND,- n coRPoRATroNor FIN- LAND APPARATUS FOR WBAPPING"CARTRIDGES, ETC.

Application iled December 31, 1928, Scria1No..329,625, and'in Swedenanuary, 1928.

lThe present invention has for its obj ect an apparatus for wrapping upcartridges of plastic `explosives or other similar materials in paper orsuch like wrappers.

The invention has for its object an apparatus for wrapping up cartridgesof plastic explosives, for instance dynamite, in paper, i. e. to providethe cartridges with wrappers or covers of paper or` similar material.

Cartridges of plastic explosives, for instance dynamite, have hithertousually been wrapped up by hand which method causes waste of time andcomparatively high cost. According tothe present invention the carl,tridges are automatically wrapped up by means of a machine in such a waythat the cartridges are brought to roll forward over a sheet of paper(or the like) serving aswrapper or cover, whereby the paper will becaught by the cartridge and wound up aroundthe cartridge,whereuponduring the continued rolling forward ofthe cartridge theedge-portions of the sheet of paper projecting beyond the ends o'f thecartridges will be automatically folded over the `end surfaces of thecartridge by means of suitable: devices, in such a Way that thecartridge' will be wholly wrapped up.

Machines have been employed before for wrapping cylindrical articles.Such m'achines have included means for supporting the article, means forapplying wrappers to the article andproviding a suitable supply Vofadhesive for securing the` wrapperstoV I the articles, means for firmly4grippingl the articles, and means operating in sequence toprogressively fold the surplus portions of` the wrappers around the endsofthe articles.

However, so far as is known, it'has rnever before been proposed toemploy apparatus'of thecharacter herein set forth for wrappingcartridges of plastic explosivematerial, such as dynamite cartridges andthe like, in paper and other similar wrapping materials.

VInlorder to clearly explain the invention there is shown on the`accompanying draw-l ings by way of example a form of construction of'amachine or apparatus suitable lfor the purpose. l

above.

' Fig. `8 shows in section on-lineVIIIVIII` in Fig. 9 thepartfofthe'machine where'the sheets of lpaper or the wrapper is woundaround the cartridges.

vFig. 9 shows, 4seen from, above, thejsame" device in section on vlineIX-"IX in Fig. y8. Figures 10, 11,?12 and A13 show acartridge with apaper wrapping during direrent' stages of the working operations. Theinvention will 'be described with ref- Th'e working` method will in allessential parts 'be thelsame also when applying'the inventiontocartridges or bodiesofother'mal is a frame, carrying vdifferent parts'ofthe apparatus.l 2 and 3 are rollers-rotatably mounted in theframe,wliich rollers'c'arryan endless conveying belt 4', the cartridgesbeing'fed on the upper `part of said beltinthe direction shown by thearrow inFi .,l. IIn.

Fig shows Ithe same device `seen from erence tofwrapping up cartridgesof plastic explosives, for instance dynamite, infpaper.,

eo" terial. Y I

the frame two additional rollers 6,l are Io-` tatably mounted over whichis running '.an

endless belt or band 8 serving Vfor feeding' the cartridges,said'belt'being soarranged that the lower portion thereofwitha suit- Yable pressure will bear againstthe cartridges which are fed forward onthe conveying vbelt 4 as shown in Fig. l. ,As shown morep'ar-V ticularlyin Fig. 5, the lower vface of thebelt is corrugated `or vgroovedlongitudinally..

Thelower portion ofthe belt 8 ismoving in.

the same direction asjthe upper portion of the lbelt' 4, but-the speedof movement of the belt 8 is somewhat greater than that of the belt 4,whereby the cartridges, when caught by the belt 8, will be fed throughthe apparatus as will be described hereafter at agreater rate than thatof the belt 4, with the result that the cartridgeswill be separated fromeach other bya suitable distance after having been caught by the belt 8as indicated in Figure 1 By the effect ofsaid belt 8 the cartridges areconveyed from the conveyor 4 in a manner clearly'shown in Figures 1 and8 over a vtable or board v9 and a receptacle or box 10 containing thesheets of paper 11 intended for the Wrapping, which papers are pressedupwardly by means of a. piston 12, movably arranged in. said receptacle10, through the action of springs 13 (or other devices suitable for thepurpose). As will be seen V.from ythe drawings said piston is Vguidedbya rod 14 fastened to the pistonor made in 4one piece therewith, said rodpassing through a corresponding opening in the bottom 15 of thereceptacle 10. Said spring mechanism may be arranged in any suitableyway, and therefore a detailed description thereof should not benecessary. In order to prevent'the sheets of paper and the piston Vfrombeing pressed too far upwards a flangelike projection 16 is arrangedatthe upper rear edge of the receptacle 10, said projection formingavshoulder or abutment for the rear edge of the sheets of paper (seeFigures 8' and 9) serving asa stopping device for the piston and forithe sheets of paper. When the sheets of paper are broughtinto thereceptacle 10, the piston'12 is pressed down in i Y such a way that thereceptacle will contain a suitable number of sheets of paper. The frontedge of the sheets of paper, i. e. the

edge that first comes intol contact with `the cartridges during theirrolling movement, is free so that, when a cartridge is under a rollingmovement over the receptacle 10, the topmostsheet of paperin eachl casewill adhere veto the cartridge and be woundup thereon during the rollingmovement of the cartridge. The rear= portion of the sheet of paper is asshown in. Figure 9 suitably cut ofi'y in sucha way as to forman obliqueangle to the lon- Agitudin'al edges and the receptacle 10 isV Y formedin the same way, whereby said end portion ofthe sheet of "paper will,get the form of an oblique tongue 17 constituting the 'outer endof thewrapper of the cartridges tand securing a tight bearing of the sheet ofpaper on the outer side of the wrapper. In o rder to make sure -thatthesheetof paper Vwill adhere to the cartridges when the cartridges arerolling forward over the receptacle 10j1t is preferable to provide themwith an adhesive coatingin casethe cartridges themselves shouldnot besufliciently adhesive.

lhismay be doneautomatically, for instance, in such a way that atransverse channel v18 is provided` the tablen9r'and by means of alcartridges upon their perforations) is arranged in the table 9, saidslot extending across the table 9. The adhesive material in question,which is pressed vinto the channel 18, will thus be pushed out throughsaid slot 2O and'transmitted onto the travel over said opening.

A plate 21 arranged in the table as shown inrFigures 8 and 9 andfastened thereto by means of screws 22 is arranged in such a way thatthe size of the slot may be regulated as desired by adjusting said plateor substituting a plate for another one having slots or perforations ofother size. As the cartridges, possibly provided with an adhesivematerial,

are rolling forward over the-receptacle 10.

as Yabove described the topmost paper in each case will adhere tothecartridges and be Wound up thereon as shown in Figure 8 so that thecartridge will be enclosed in a paper coating when it by the action ofthe belt '8 has finished its way over the receptacle. Said paper coatingextends somewhat beyond the ends of the cartridges. In order to bringabout a folding of the projecting end portions 23 of the paper so thatsaid end portions willget the form of tongues, which in usual way coverthe ends 24 of the cartridges, the machine is provided with foldingmembers 25, so constructed as to fold the projecting parts 23 at theends of the sheets of paper as shown in Figures 1 1, 12, 13 when thecartridges during their Vrolling movement are fed past said foldingmembers, a. set of which is positioned at each side of the machine, i.e.

corresponding to each end surface of the cartridge, said tonguescovering the ends of the cartridges and at the same time also preventingthe paper wrapper from unrolling or loosening from the cartridges.According to the form of construction shown on the drawings said memberis formed of a number of strips of metal 26 or the like, the turned inends of Vwhich have thev form of oblique hooklike portions 27 beingobliquely positioned as vshown in Figures 7 and 9. Said membersareadjustably fastened at the side of the path or way of the cartridgethrough the machine in such a way that said hook formed portions duringthe rolling'inovement of the cartridge come into the way of .projectingportions 23 of the wrapper as shown in Figures 10 and 11 but in such amannerv that they will not be in the way of vthe cartridges themselves.During the rolling movement of the cartridges said members will fold theend portions 23 of the wrapper, as shown in Figures' 10-13 inclusive,into tongues 62 covering the ends of the cartridges. `Said members 26,can be maintained in working position by means of guides 28'held in,position in the frame ofthemachine by means of screws V29. When thecartridges have passed said folding memberstheir'end surfaces will bearagainst guides 26 whereby the'tongues 62 formed at the ends will bekept` pressed against 'the end surfaces of the car tridges, untilsaidtongueshave been further pressed againstthe material vin the cartridgeand securely maintained by means cfa device, which will be describedhereafter.

By vmeans of suitable pressing rollers 30 thelower part of` the` belt 8is kept pressed against the :cartridges so that the cartridges withoutbeing deformed will be properly broughtforward bythe effect of saidbelt. which suitably can be provide-d withfgrooves as indicated in Fig.5. After having been fed past the said foldingmembers the cartridges arerolling over atable 31 (see-'Fig-` ures l and 6) the rearend ofsaidtable A(in the direction of movement) being` provided with-alowered ordepressed portion 32 on the upper surface in which lower` portion the'cartridge enters and 'simultaneously comes out of engagement with thebelt 8; In thispo.- sition the cartridge is caught by devices whichfurther press the tongues 62 of the paper against the ends ofthecartridge and.

also convey or ltransport thercartrid'ge in a manner which will bedescribed hereafter.

An endless link chain 33 isr-mounted Von two pairs of rotatablyarrangedchain wheels 34, 35, driven by any suitable devices. The chain carriesfleXibleU-formed 1members 36 arranged vat 4a suitable distance from eachother, which U-formed members at their free ends are provided withinward projecting pins 37. According to the form of construction shownon the drawings the lower part of the chain 33 enters into a receptacle38 con-` taining molten paraffin for coating or impregnating thewrappers of the cartridges. 57 and 58 (see Figure 2) are inlets andoutlets for steam or other heating medium. The receptacle 38 may beomitted if such impreg* nation or coating should be unnecessary, or theparaffin may be substituted for some other suitable liquor or fluid fortreating the cartridges if desired. The chain 33 is moving in thedirection indicated by the arrows in Figure 1, i. e. in such a way thatthe upper part is moving in a direction from the table 31 down towardsthe receptacle 38, and the other part is moving from said receptacleupwards towards the table 31. Below said table at the rear end thereof aU-formed guide 39 is arranged in such a way that the free ends of theU-formed member 36 during the movement of the chain will grip theforemost tapered end 40 of the U-formed member 39 (in the direction ofmovement) and during the continued movement slide along the outer sideportions 41 of the U-formed memguides 26'.

ber39, whereby'the shanksof the U-formed member 36 will ,bebrought apartso that -while the -shanks of lsaid U-formed portion `are forcedoutwards the `inward directed 'free ends ofthepins 37 dofnot comeinto'contact withthey cartridge 5 positioned on the table but will passalong theouter sides ofthe The length of the U-formed guide 39 is,however, adjusted in such-away that, whenthe U-formed vmember -36 haspassed the ends'42 oftheU-formed guides .the pins 37 will-be in positionopposite the end surfacesof the cartridge v5-on the `table 31 so thatwhen' the U'forme'dmember 36 comes out-of engagementwithv the ends 42jthe shanks ofthe `U-formed `member 36 ywhich have been-brought apart-when passing the i-formed member 39,on account Aof their flexibilitysnap together somewhat `towards each other, i.` e'. take up their normal,posi` tion, wherebythe pins 37 as shown in Figures .tand 5,snapinto-the grooves^262 Yprovided in the guides `26 and pressy againstthe end portions of the cartridges pressing in thev tongues 62 so asl'to fully secure the closure of the wrapper rat the end surfaces. Thecartridges are nowvcaught by said pins and are rolling forwardduring'the movementof thechain thus held by the v-Uformed members 36.The cartridges are thus `brought through the parafin bathin thereceptacle 38 and 'taken outof'the bathand `made'to travel along duringthe-continued movementof the chain until they at last are released fromthel U-formed-members 36, as rabove described. Y bythe `effect -o'f the'.U-formed member, 39' which ibi-'ings the Shanks v36` ap art ust-enoughto release the cartridges 5 whereby.-the` cartridges will be .releasedand .fall down into a `receptacle 43 serving rf or `receiving the same.

60 isa trough of sheet vmetal, intended to a common driving device. l"Ineach case it must be controlled that 'the'rate of speed be tweenthedifferent driving vdevices will be suitable yfor Vthe purpose,.namelysucli that the, belt 8-iis driven "at a vsomewhat greater speedthan the conveyingl belt 4 as also that thespeed ofithe conveyingchain33 is such in relation to the speed of feeding of the cartridgesthat at each `time 4a -Jcartridge -is fed into the position'ontheftab'le31 shown atthe leftin'Figuret aU-formedmember 36 willVcome'into-positionjto gripit as shown in Fig ures fand 5.

According toiithe forni `of constructionA shown on the drawings by wayof example the chain 33, and the belts 8 and 4 are driven from a commonsource of power by means of a driving belt or the `like running over apulley 46 mounted on a shaft 47 rotatably mounted in th-e frame,said-shaft carrying the roller 7 on which the belt 8 is arranged, asalso a toothed wheel V48 secured to said shaft which meshes with atoothed wheel 49 on the shaft 50, carrying the chain wheel 35 whichdrives thechain 33. The shaft 50 carries also a pulley 5l which is indriving connection with` apulley 53 by means of a driving belt 52 or thelike said pulley 53 being arranged :on a rotatable shaft (not shown)also carrying a friction disc 55 which gears with a frictionk disc 56von one endof the sha-ft 54 feeding the belt 4, the'roller 3 driving theconveying belt- 4 being arranged on vthe other end of'said shaft 54.

Saidv friction vgearing or `friction coupling is suitably arrangedso asto give the belt 4 an intermittent movement whereas the chain 33 and thebelt 8 move continuously. For

this purpose the disc 56 for instance may at the periphery be providedwith va depressed portion so formed that the disc will stop after avingcompleted a revolution and the belt having been moved forward'a distancecorresponding to the length of a row of cartridges placed on the belt 4.After having placed a new'row of cartridge-s von the belt 4, said beltmay be put into motion by bringing the discs and 56 in drivingconnection with each other vby means of devices suitable for the fpurpose, whichdevices may be of any suitable construction, and thereforeitought not Vto be necessary to give a detailed description d thereof.Said devices may for instance be regulated means of a hand lever 57 anda link 58er by means of other suitable devices.VV 59 is a crankpin bymeans of whi-ch a pump (not shown) may be driven for supplying the'abovementioned adhesive material to f the channel I8 and the opening 2O.

Itfought Vto .be evident that details of the formof construction shownb-y way of eX- ample on the r,drawings may be modified without departingfrom the' idea underlying the invention.

`Having thus described my invention I declare that what I claim is 1.Apparatusv for wrapping cartridges of plastic Vexplosive material,comprising means for feeding the cartridges in supported position, meansfor applying vadhesive. to said cartridges during their movement, a:supporting table, said table having thereon a stack of sheets .ofwrapping material of greaterV width thanthe length of said cartridgesarranged with'its upper surface substantially on a level with-saidtable, means` for rollingV saidcartridges in succession and inspaced Y YrelationY over said table and' over thesurface ofsjaid stack, wherebyeach of said cartridges in the U shaped members have resilient shanksprovided with inwardly extending pins adapted to engagethe ends of theVplastic explosive material suiiicient to firmly hold them withoutexploding them.

3. Apparatus according to claim l, including means adapted to engagesaid U shaped members during their courseeof travel and cause them torelease said plastic mass without exploding same.

4. Apparatus according to claiml, Wheree inthe speed of travel of saidconveying means is such that a Ushaped member is in positionl to receivea cartridge each time a cartridge is ready'for discharge from saidtable, means being provided for preventing the explosion of said plasticmass.

5. Apparatus according to claiml, wherein thev supporting table' isprovidedwith a depressedportion 'onto which said cartridges are rolledinto grippingposition by said UV Y Y shaped members. Y Y

lIn testimony whereof I afx my signature;

ANTON'ERIK ANDELIN.

' los 10ov l 1 lis

